Using B-splines for alignment of satellite geolocation elevation data

Geoinformatics

UDC:

528.8

DOI:

10.22389/0016-7126-2024-1014-12-54-59

1 Vasiliev N.P.

2 Vagizov M.R.

Year:

2024

№:

1014

Pages:

54-59

St. Petersburg State Forest Technical University named after S. M. Kirov

1,

2,

Abstract:

The possibility of constructing analytical models of terrain elevation is studied with mathematical apparatus of B-splines based on satellite geolocation data. For constructing regression models the main nodes of splines are chosen independently of measurements. An algorithmic approach is discussed to avoid degenerate cases, which may arise from this selection. B-splines can be used to create more accurate digital elevation models; their applications in practical field are land-use planning, disaster risk management and mapping, operational visualization of more accurate geofield data. The presented method of assigning spline boundary nodes, allows excluding the effect of over fitting, usually occurring when the number of spline knots is comparable to that of measurements. Calculations are performed due to the data obtained with the help of mobile application developed by the authors

Keywords:

analytical elevation models, B-splines, B-spline approximation, elevation modeling, satellite geolocation

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Citation:

Vasiliev N.P.,

Vagizov M.R.,

(2024) Using B-splines for alignment of satellite geolocation elevation data. Geodesy and cartography = Geodeziya i Kartografiya, 85(12), pp. 54-59. (In Russian). DOI: 10.22389/0016-7126-2024-1014-12-54-59